Younger children will love everything about Sesame Street's online home. They can choose from hundreds of the show's video clips and play games that help them learn letters, animal sounds, rhymes, colors and more.

When a mom mention she's looking for some great educational websites for her kids, it's not long before Starfall.com is mentioned. The site has been online since 2002 and works with your children through letter recognition all the way through to reading plays, nonfiction and comics.

CoolMath calls itself "an amusement park of math and more." Children can play online math games that help them with addition, subtraction, multiplication, division, decimals, money and more. CoolMath is geared toward ages 13 and up, but sister site CoolMath4Kids.com is appropriate for ages 3 through 12. CoolMath-Games.com includes math gamesfor preschoolers.

A site that guarantees to make your child a genius has a lot of promises to live up to.MakeMeGenius.com is filled with videos that cover a variety of subjects, such as physics for kids, photosynthesis, the nervous system, solar system and electricity. All of the videos are kid-friendly and will keep even your youngest children interested from start to finish.

From the publishers of TIME magazine, TIME for Kids is loaded with interesting articles, photos and videos. Politics, the environment, entertainment, sports and health are just some of the topics covered. TIME for Kids isn't as interactive as most of the other website on this list of educational websites for kids, but the site does tackle subjects that are in the news now while being written for an audience of children.

Watch animal cameras, learn interesting tidbits about animals, see and share photos of nature, learn about different countries and try science experiments. These activities don't even begin to scratch the surface of the National Geographic Kids website. There's even a "Little Kids" section for the younger explorers in your house.

The Kidz Pagehas more than 5,000 pages of learning games and activities. Online coloring pages, jigsaw puzzles and word games are just a few sections of this massive site. Each holiday also has its own section of activities and games to enjoy with your children.

When your child wants to know why the sky is blue, how a tornado forms or any number of other questions she can come up with on a daily basis, head on over to How Stuff Works. The articles break down subjects like autos, culture, entertainment, science, money, technology and more. Games, quizzes and videos also round out your children's learning experience.

One visit to Fun Brain and you'll want to bookmark it for your kids. Math, reading, online books and learning games are just some of the site's many treats. Fun Brain caters to preschoolers through 8th graders.

Can't get to the Exploratorium, a hands-on muesum in San Francisco, CA? Their website offers hunders of videos, apps, and activities on everything from what happens to meat when you cook it to why voice sounds so good in the shower.